Liquid-fuel-feeding apparatus



(No Model.)

W. E. EASTMAN. LIQUID FUEL FEEDING APPARATUS.

Patented July 31(1888.

Afimdzd/ 4., QM mum-Ma my UNITED STATES PATENT OFFICE.

WILLIAM E. EASTMAN, OF BOSTON, MASSACHUSETTS ASSIGNOR TO THE EASTMANFREIGHT OAR HEATER COMPANY, OF PORTLAND, MAINE.

LlQUlD-FUEL-FEEDING APPARATUS.

SPECIPiCATION forming part of Letters Patent No. 387,056, dated July 31,1888.

Application filed April 18, 1887.

To all whom it may concern.-

Be it known that 1, WILLIAM E. EASTMAN, a citizen of the United States,residing at Boston, in the county of Sufi'olk and State ofMassachusetts, have invented certain new and useful ImprovementsiuLiquid-Fue1-Feeding Apparatus, of which the following, taken inconnection with the accompanying drawings, is a specification. Theobject of my present invention is to produce a cut-off valve, plug-cock,and an automatically-regulated feed-governor operating in conjunction,which in their entirety I designate as a liquidfuel-feeding apparatus,designed to regulate the supply of liquid fuel from the reservoir to thestove, as adapted to my heretofore patented method of heating steamrail-cars for the transportation of produce.

The improvements herein combined especially refer to the constructionembodied in a previous application filed March 14, 1888, and numbered230,905. Therein two vehicles are introduced,t0 make operative certainparts appertaining to that method.

The purpose of my present improvement is to simplify and perfect thatinvention, rendering it more effective by the introduction of but oneliquid and the addition of a cut-off valve and plug-cock, thus'lesseningthe expense of its production. I attain these desiderata through theprinciples involved and the construction shown in the illustrationcomprising a part of this specification, wherein- Figure 1 exhibits alongitudinal vertical section in perspective of one half of my improvedapparatus' with its connecting-pipes and reservoir in elevation. Fig. 2is a side elevation in section of the plugcock and its connections.

Specific references by letters occur throughout the drawings, referringto which- A designates the oil-reservoir situated beneath a car, thedepth of one end being increased, as at B, to receive any sedimentarydeposit, which, if suspended, would interfere with the efficiency of thedrawing-oil pipe H. The several pipes may be further protected at theirterminals within said reservoir by net- Serial No. 235,264. (No model.)

ted coverings (not herein illustrated) across their orifices, ifdesirable. i

The operation of the reservoir and its conmeeting-pipes, together withthe operation of the clutch mechanism, is as follows, viz: In themanipulation of the plug-cock, cut-off valve, and several pipesestablishing communication from the oil-reservoir suspended from thecar-bottom to the place of consumption, it is necessary to expedite thefiow of oil therefrom through the admission of air in proper volume todisplace the contents of said reservoir, which otherwise is hermeticallysealed, for reasons which presently appear.

To facilitate the simultaneous actuation of said cock and valve at aproper moment,an intercommunication is achieved through a clutch soloosely connected that only the second movement of the (plug-cock)ball-lever bar insures the admission of air to the reservoir andexpulsion of oil therefrom at one and the same moment.

Referring to the illustration, 0 designates the air-duct, which iscontrolled by the plugcock D and additionally actuates the cutoff valveE through the instrumentality of the lever-clutch F. In the manipulationof said cock by the attendant, the ball-lever bar G lying upon its restg in the dotted position indicated at G, air is excluded from the duct 0and the oil is suspended in its passage through the outflow-pipe H.Moving said lever to the vertical position at G admits the air from thedirection of the arrow a to the reservoi'r,(this being its positionwhile replenishing the 'same with the oil still suspended in itsmovement. The final rotation of said lever'bar places it in thedepressed position shown at G, actuating said clutch and permitting theoil toflow freely through its channels I and J in the direction ofarrows to theplace of its ignition and consumption, the air meanwhilehaving free admission through the venttube 0 to the reservoir, which ishermetically sealed to protect 'its contents from humid and frigidconditions of the atmosphere or evaporation during extreme heat.

K is also an air-vent duct, permitting the escape of air should anyaccumulate or exist in the sediment-chamber L, which receives the oilprevious to its passage through the valve M, and is further intended toretain any residue of foreign matter, which, if existing, may be removedat intervals through the orifice at the bottom, which is closed by ascrew-cap, as illustrated.

Q designates a cylindrical internally-threaded casing, the bottom ofwhich is also closed by a screw-cap, and which is tapped or threadedinto the bottom of the bed-piece T, or, if preferred, maybe castintegrally with the same. This casing contains and supports theaccessories actuating the valve M upwardly, said accessories consisting,first, of a receiving-nut, P, threaded within the bottom of saidcylinder; second, the follower and resisting spring 0, seated withinsaid nut, and, third, the check-nut N, gaging the downward movement ofsaid valve, which is properly splined to prevent its rotation, andprovided with a transverse conical through oil-passage, 0, locatedopposite the horizontal channels IJ in the bed-piece T.

The loose diaphragm R rests above said valve, the central portionthereof being increased to a suitable thickness, that it may beprotected from injury through its abrasion with the valve top, thepropulsion of the valve downward being effected by the expansion of thealcohol influenced by any change of temperature, and its consequentpressure (through the foraminous bridge W) upon the resilient diaphragmS and loose diaphragm R, consecutively. The valve M, thus receivingmotion intermittently through said diaphragms, automatically controlsthe flow of olcose fuel to the burner, that the requisite amount ofwarmth may be maintained, increasing as the temperature falls anddecreasing as the temperature rises;

Threaded into the bed piece T, through which the oil flows, and whichforms the chamber wherein the diaphragms R and S are situated, is thechambered receptacle U, containing alcohol to the exclusion of any otherliquid vehicle, the expansive properties of which under heat I haveproved by exhaustive experiments to fulfill all the requirements of myinvention, heretofore obtained through the addition of mercury as anauxiliary expansive power. I

To protect the resilient diaphragm S, (which in my present invention Isolder or otherwise permanently attach to the annular shoulder V,') atransverse perforated bridge, W, preferably constructed integral withthe said receptacle U and concaved upon the plane contiguous tothediaphragm,liessufficientlyabove the same to limit its upper movementand to protect it from injury by the valve M in its propulsion upward.For convenience of construction 1 form connection at any point in thelength of the chamber U, to which I aifix an extended receptacle, X,which may or may not be of corresponding diameter, and

of liquid fuel to the stove.

which particularly subserves the purpose of an expansive air-chamber,being screw-capped,

as at Y, for the admission of the liquid contents, with a sufficientspace above the latter that the air therein inclosed may form an elasticcushion to ineet the maximum expansion of the contents without injury tosaid diaphragms.

Z designates a screw-plug for the liberation of-the surplus spirits overand above what is required to produce the necessary pressure andconsequent action upon said diaphragms to actuate the valve M andcontrol the flow The latter is not herein illustrated, butclearlyexhibited in my former Letters Patent, No. 247,028, September, 1881, No.248,924, November, 1881, N 0. 269,189, December, 1882, and No. 253,521,February, 1882.

I- am aware that several features of my in: vention herein describedwere before set forth and claimed in my previous application filed March14, 1887. I therefore do not herewith claim such features, broadly; but

What I do claim, and desire to secure by Letters Patent, is-

1. In a liquid-fuel-feeding apparatus, the combination, with thereceptacle U, provided with a foraminous base or bridge, W, and anexpansive chamber, X, threaded into the top thereof, the bed-piece T,provided with oilducts J I, the diaphragms S R, the perforated valve M,underlying said diaphragms, and the follower O, of a hermetic tank, A,provided with a deposit-chamber, B, at the bottom of one end thereof,air-pipes G K, for admission of air above the contents of said tank, andoutlet-pipe II, provided with the cut-off valve E, for transmitting oilto the burner, substantially as described.

2.'In a liquid-fuel-feeding apparatus, the combination, with abed-piece, T, provided with transverse oil-ducts J I, the diaphragms RS, seated within said bed-piece, the valvecase Q, thereto attached,provided with accessories embracing a nut, l, spring-follower O, andcheck-nut N, the valve M, thereby actuated, and provided with theoil-passage c, of a receptacle, U, for the reception of alcohol,provided with a foraminous concaved bridge, W, at its bottom and ascrew-plug, Z, at its top, admitting to the interior, substantially asillustrated, and for the purpose described.

3. In a liqnid-fnel-feeding apparatus, the expansion-chamber X, thereceptacle U, thereto united, to contain alcohol, the diaphragms R andS, adapted to receive the pressure of said alcohol, the hermetic tank A,the accessory pipes O K, conveying air thereto, the oil-pipe H, leadingtherefrom, the cock D, provided with an operative lever-bar, G, theloose clutch F, and the cut-off valve E, constructed and adapted tooperate in combination with a bed-piece, T, provided with oilpassages,and a residuum-chamber, L, the valve-case Q, thereto attached, thespring-fol" lower 0, therein contained, and the valve M, scribingwitnesses, on this 14th day of April, having a reciprocating motion tocontrol the A. D. 1887. variable flow of liquid fuel to the burner,substantially inthe manner and for the purpose 5 set forth. Witnesses:

In testimony whereof I have signed my name LYMAN SPALDING, to thisspecification, in the presence of two sub: FANNIE P. BARTLETT.

WILLIAM E. EASTMAN.

